Definition: an electrocardiographic lead passed down the throat into the esophagus to record the electrocardiogram at various levels of the esophagus; especially useful for certain types of arrhythmias. Similarly, a transducer for echocardiography can be passed into the esophagus.
© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.